Matched context for need and difficulty

The page lists matched contexts for need and difficulty.

Share - need	Share - difficulty	Phrase
7.00%	2.60%	eliminate {need or difficulty} [perform operation]
3.90%	3.17%	obviate {need or difficulty} [perform operation]
1.01%	5.48%	{need or difficulty} [does] arise
0.93%	2.29%	avoid {need or difficulty} [perform operation]
1.92%	1.05%	not {need or difficulty}
0.20%	0.54%	{need or difficulty} [does] control
0.19%	0.64%	{need or difficulty} [does] maintain
0.21%	0.29%	{need or difficulty} [does] make
1.20%	0.65%	{need or difficulty} [does] provide
0.31%	0.24%	{need or difficulty} [does] use
0.39%	0.36%	engine {need or difficulty}
0.24%	2.27%	great [size] {need or difficulty}
0.25%	0.65%	particular [typicality] {need or difficulty}
0.45%	0.52%	reduce {need or difficulty} [perform operation]
0.26%	0.15%	system {need or difficulty}